The formal verification of multi-agent systems aimed at proving that such systems meet their specifications has given rise to a very active field of research at the crossroads of formal methods, knowledge representation and artificial intelligence. Alternating-time temporal logics are considered as one of the most popular and influential logical formalisms for strategic reasoning in multi-agent systems and have been introduced by Rajeev Alur, Thomas Henzinger and Orna Kupferman about 25 years ago.